Diamond and Graphite

Diamond and Graphite

1. Graphite

   • Layered Structure
     • Weak intermolecular forces between the layers
       • the layers can slide over each other making graphite slippery
         • Graphite in pencils leave the black mark as it wears away
         • Good lubricants as it also has a high melting point so won't break down like oil would
   • Each carbon atom is joined to 3 other atoms with strong covalent bonds
     • One free delocalised electron
       • Can be used as electrodes as it can conduct electricity
       • It can conduct heat

2. Diamond

   • Hard
     • Cutting tools
   • Lustrous and transparent
     • can be cut into shapes to allow light to pass through it to make it look like its sparkling
       • jewellery
   • Each carbon atom forms strong covalent bonds with 4 other atoms to form a giant covalent structure
     • Explains its extreme hardness and high melting point
     • Cannot conduct electricity as there are no delocalised electrons who are free to move to carry charge